Page 142 - intelligent encyclopedia ( equipment issue 1 )

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TRANSFORMERS

•Note: windings' temperature increase is measured by the resistance (dielectric) method.
- The transformer should be provided with two groups of temp. indicators, one of them also
sends an audible or visible alarm of the temperature increase when the temp. is near the maxi-
mum allowed limit.
- The second indicator group disconnects the transformer from the feeding source when the
temperature increase continues

• The transformer’s attach- • The transformer’s data board

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